7 Amazing Houseplants That Start with K

Ideally, any plant species that will tolerate moderate levels of humidity and lower exposure to sunlight can be grown indoors. While there are tons of plant species out there, in this article, we’ll focus on houseplants that start with K.

The letter K includes a variety of unique and flowering plant species. The most popular one here is Kalanchoe, but there are some underrated choices that will add a lot of beauty and color to your indoor garden. Let’s check them out!

1. Kalanchoe

Kalanchoe Flowers

Kalanchoe is one of the most popular flowering houseplants that is grown out there. The plant is actually a large genus that includes over 100 to 120 species of plants that belong to the Crassulaceae, which makes the Kalanchoe a close relative to the Jade plant.

The plant is originally native to the tropical regions of Africa and Madagascar, but thanks to the colorful flowers of the plant, it has been grown in various parts all over the world nowadays.

In fact, the cluster of vibrant flowers is the most characteristic feature of perennial succulents, although a lot of people also admire the plant’s scallop-shaped leaves that extend beneath the flowers.

Despite the delicate looks, the plant is actually quite hardy, which makes it an excellent choice for indoor growing. The dry-tolerant plant thrives in bright indirect light, although full sun exposure might be necessary for some species in order to bloom the flower.

You can grow kalanchoes in sandy yet well-drained soil but make sure that you keep the soil pH acidic (between 5.8 to 6.3) for best results.

With that being said, all parts of the plant are quite toxic to pets, so make sure that you keep your cats and/or dogs away from the plant.

2. Kaffir Lily Plant

Kaffir Lily, also known as “Bush Lily” and botanically as “Clivia Miniata”, is a unique flowering plant species that belongs to the Amaryllidaceae Family.

The plant is native to South Africa and the landlocked country Eswatini, but the plant is used worldwide in floral arrangements thanks to its beautiful and vibrantly colorful flowers.

The flowers usually bloom in early spring but it takes the plant a few years before it starts blooming. The flowers are also short-lived but once you remove them, new flowers will grow in their place.

The plant tolerates partial shade, although it does best when you expose it to bright indirect light, especially during the blooming season. This makes an east-facing window a great spot to keep the plant.

The plant also tolerates cool temperatures pretty well, and you don’t have to mist or sponge the plant within average room temperature.

Despite the plant’s flexibility when it comes to indoor conditions, moving the plant around too much will disturb it, so make sure that you keep it in one spot and only re-pot the plant when it’s necessary.

The plant contains various toxic alkaloids that make it poisonous to pets, especially cats, so make sure that you keep the plant out of their reach.

Read more: 7 Mesmerizing Houseplants That Start with J

3. Kaffir Lime Tree

Despite the similarities in names, the Kaffir Lime and the Kaffir Lily are completely different plants. The Kaffir Lime’s botanical name is Citrus hystrix, which belongs to the citrus family Rutaceae.

Not only that, but the two plants also don’t share a common origin, as this one is native to the tropical regions of Southeast Asia.

The plant’s name was assigned by the botanist H.F. Macmillan in 1910, but due to the controversial history behind the plant’s name, some people prefer calling it “Makrut lime”.

In fact, the Makrut lime has been used in the local cuisine in that region for a long time due to the intense citrus scent that the rind and leaves produce.

The plant is surprisingly tolerant to non-ideal conditions, so you can grow it indoors as a fruiting houseplant as long as you keep the plant’s soil moist, but not dripping wet. You can also make up for the lack of humidity by misting the plant more often.

The fruits of this plant are noticeably bumpy, but they’re similar in size to regular limes and produce very little juice in comparison.

4. Kohleria

Kohleria flower

Kohleria is a genus of flowering plant that belongs to the Gesneriaceae Family, which makes the plant a close relative to the more popular “African Violet” plant.

This tropical flowering herb features fuzzy or velvety stems and foliage, thanks to microscopic red trichomes that cover the entire plant, along with some vibrant trumpet-shaped blooms with unique patterns.

The plant grows relatively quickly and blooms prolifically, reaching heights of around 2 ft, so it’s recommended that you prune them periodically to keep their growth under control.

The plant thrives in high humidity and bright indirect light, which allows the plant to bloom for a very long time. Kohleria will tolerate lower levels of humidity and light but it won’t bloom as brightly.

5. Kangaroo Paw

The Kangaroo Paw is the common name of the Anigozanthos plant, which is a genus of flowering herbaceous plants that includes over 11 different species.

The plant is originally native to Australia, and it’s called “Kangaroo Paw” due to the shape of the plant’s leaves, which are long and curved with a layer of tiny hairs covering them, which makes them look like animal paws.

Different species of plant don’t vary much in terms of shape and size. However, each one has a relatively unique shade of color, which includes vibrant colors like purple, red, yellow, and orange.

The plant is easy to grow indoors and its ornamental look makes it a huge addition to any house style.

Luckily, the colored flowers will bloom in spring, summer, and fall. However, the plant requires plenty of full sun exposure, so keep them near a south-facing window.

Also Check: Houseplants That Start With I: 7 Unique Options

6. Kerria

This plant is botanically known as “Kerria japonica”, but it also goes by various common names, such as “Japanese Yamabuki” and “Japanese Rose”, because this plant is a deciduous shrub that belongs to the Rosaceae, the same family as roses.

The plant features beautiful yellow flowers that are bright in color and rest over an arching tender stem. The leaves of the plant are relatively narrow with noticeable veins running through them.

Kerrias will thrive in partial shade to full sun, but make sure that you re-pot them as they grow and prune the dead branches to keep them in the best conditions.

7. King Protea

king protea

Lastly, we have the King Protea plant, which is botanically known as “Protea cynaroides”. This flowering plant is characterized by its huge flower heads among the protea species, which is why it’s also called “Giant Protea”

The South African native plant isn’t the easiest to grow indoors, but it can be a worthy challenge for an experienced grower.

The main reason here is that the plant requires a lot of sun exposure to bloom. Also, the plant requires a relatively high humidity level.

Luckily, you can use artificial light and a humidifier to optimize indoor conditions and help the plant thrive and bloom its exotic flowers.

Wrap Up

There you have it! A brief guide that walks you through 7 amazing houseplants that start with the letter K.

The best part about these plants is that most of them bloom some beautiful flowers for an added bonus of beauty!